Tennyson Weather

 J. L. Carr, A Month in the Country (London: Penguin Classics, 2000), p. 54:

Deep red hollyhocks pressed against the limestone wall and velvet butterflies flopped lazily from flower to flower. It was Tennyson weather, drowsy, warm, unnaturally still.

A related post: A Disinclination to Sleep Away From Home

Frederick Carl Frieseke, Hollyhocks (1913)